Don't see why it wouldn't be. I'm running on CM13, but had to briefly go back to stock 4.4.2 to get back to the old bootloader (apparently the Lollipop one may be responsible for problems with the SPen in cyanogenmod, will see if it actually made a difference). I didn't actually set up the stock KitKat system, but it did boot normally and had the normal propmpt for setting up the system at the beginning.

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